What defines a vertebrate?, Has a backbone or spinal column, Lives in water only, Lacks a skeleton, Which of these is an invertebrate?, snake, frog, octopus, Which group is a vertebrate?, worm, mammals, crab, Which animal is NOT a vertebrate?, cat, earthworm, What is a common characteristic of most vertebrates?, Unsegmented bodies, Internal skeleton or backbone, Lack of nervous system, Which category do insects belong to?, Vertebrates, Birds, Invertebrates, Which is a vertebrate class?, Namatoda, Reptilia (reptiles), Mollusca, Which organism is an invertebrate?, Penguin, Butterfly, Shark, Why are humans vertebrates?, We live in water, We are warm-blooded only, We have a backbone, Which feature helps identify a vertebrate?, Radial symmetry, Exoskeleton, Vertebral column

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